which of the following statements concerning confidence intervals is false? a. a narrower confidence interval can be obtained by increasing the sample size. b. a narrower confidence interval can be obtained by decreasing the degree of confidence desired. c. a confidence interval can be inferred when a probabilistic sample is drawn. d. a confidence interval is produced by calculating the degree of nonsampling error for the particular statistic. e. precision can be increased by increasing sample size or decreasing the confidence level. 2 points save answer

Answer:

  (x, y) = (1, 4)

Step-by-step explanation:

You want the solution to the equation (x²-2x+1)⁷⁷ +(3x-2y+5)⁸⁸ = 0​.

The first term can be rewritten as ...

  \((x^2-2x+1)^{77}=((x-1)^2)^{77}=(x-1)^{154}\)

This means both of the terms are being raised to even powers. Any non-zero value of the base expression will result in a positive value for the term. That is, each term is non-negative.

The sum of two non-negative terms will be zero if and only if each of the terms individually is zero. That means the equation resolves to two equations:

The solution to the first equation is x=1. Using this value in the second equation, it becomes ...

  3 -2y +5 = 0

  8 = 2y . . . . . . . . add 2y

  4 = y . . . . . . . divide by 2

The values of x and y that will make the equation true are ...

  (x, y) = (1, 4)

Answer:

17/25

Step-by-step explanation:

sorry if I'm wrong

lay them out on.a piece of paper and circle every multiple of 2

The graph of the cosine function is plotted and attached

A cosine graph, also known as a cosine curve or cosine function, is a graph that represents the cosine function.

The cosine function is a mathematical function that relates the angle (in radians) of a right triangle to the ratio of the adjacent side to the hypotenuse.

In the function,  h(x) = 0.5 cos (-x + 3), the parameters are

Amplitude = 0.5

B = 2π/T where T = period.

period = 2π / -1 = -2π

phase shift = +3

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Answer:

B

Step-by-step explanation:

A, C, and D are rational numbers. For D,

\( \sqrt{16} = 4\)

Answer:

I believe the answer is B

Answer:

8?

Step-by-step explanation:

We have a differential equation as 6x5sin(2x)y′′−2x2cos(6x)y′=0 given that y1=2 and y2=cos2(6x) sin2(6x) are the solutions.

To prove this we can check whether both solutions satisfy the given differential equation or not. We know that the second derivative of y with respect to x is the derivative of y with respect to x and is denoted as "y′′. Now, we take the derivative of y1 and y2 twice with respect to x to check whether both are the solutions or not. Finding the derivatives of y1:Since y1 = 2, we know that the derivative of any constant is zero and is denoted as d/dx [a] = 0. Therefore, y′ = 0 . Now, we can differentiate the derivative of y′ and obtain y′′ as d2y1dx2=0. Thus, y1 satisfies the given differential equation. Finding the derivatives of y2:Now, we take the derivative of y2 twice with respect to x to check whether it satisfies the given differential equation or not. Differentiating y2 with respect to x, we get y′=12sin(12x)cos(12x)−12sin(12x)cos(12x)=0. Differentiating y′ with respect to x, we get y′′=−6sin(12x)cos(12x)−6sin(12x)cos(12x)=−12sin(12x)cos(12x)Therefore, y2 satisfies the given differential equation.
Hence, both y1 = 2 and y2 = cos^2(6x) sin^2(6x) are the solutions to the given differential equation 6x^5 sin(2x)y′′ − 2x^2 cos(6x)y′ = 0. Both y1 = 2 and y2 = cos^2(6x) sin^2(6x) are the solutions to the given differential equation 6x^5 sin(2x)y′′ − 2x^2 cos(6x)y′ = 0. To prove this, we checked whether both solutions satisfy the given differential equation or not. We found that the second derivative of y with respect to x is the derivative of y with respect to x and is denoted as y′′. We differentiated the y1 and y2 twice with respect to x and found that both y1 and y2 satisfy the given differential equation. Both y1 = 2 and y2 = cos^2(6x) sin^2(6x) are the solutions to the given differential equation.

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The probability of picking a card with an even number is \(\frac{3}{10}\).

To find the probability of picking a card with an even number:

Therefore, the probability of picking a card with an even number is \(\frac{3}{10}\).

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COMPLETE QUESTION:

The numbers 7, 11, 12, 13, 14, 18, 21, 23, 27, and 29 are written on separate cards, and the cards are placed on a table with the numbers facing down. The probability of picking a card with an even number is _____.

The weight of the dog is calculated by multiplying its mass of 40.0 kg with the acceleration due to gravity of 9.80 m/s^2, resulting in a weight of 392 N.

The weight of an object is the force exerted on it due to gravity. The formula to calculate weight is

weight = mass x acceleration due to gravity

In this case, the mass of the dog is 40.0 kg, and the acceleration due to gravity on Earth is 9.80 m/s^2. Plugging these values into the formula, we get

weight = 40.0 kg x 9.80 m/s^2

weight = 392 N (Newtons)

Therefore, the weight of the dog is 392 Newtons.

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Answer: Tension and compression refer to forces that attempt to deform an object. The main difference between tension and compression is that tension refers to forces that attempt to elongate a body, whereas compression refers to forces that attempt to shorten the body.

Step-by-step explanation: thank me later

Answer:

C

Step-by-step explanation:

the only answer choice with a variable in it, that is what an algebraic expression is

Answer:

C. 3 – a

Step-by-step explanation:

The most appropriate units to describe the cost of the sandbox would indeed be dollars.

When describing the cost of an item or service, it is essential to use the unit that represents the currency being used for the transaction. In this case, the total cost of the sand for the school's sandbox is given in dollars. To maintain consistency and clarity, it is best to express the cost in the same unit it was provided.

Using dollars as the unit for the cost allows for clear communication and understanding among individuals involved in the transaction or discussion. Dollars are widely recognized as the standard unit of currency in many countries, including the United States, where the dollar sign ($) is commonly used to denote monetary values.

Using meters, the unit for measuring the dimensions of the sandbox, to describe the cost would be inappropriate and could lead to confusion or misunderstandings. Mixing units can cause ambiguity and hinder effective communication.

Therefore, it is most appropriate to describe the cost of the sand in dollars, aligning with the unit of currency provided and commonly used in financial transactions. This ensures clarity and facilitates accurate comprehension of the cost associated with the sand purchase for the school's sandbox.

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Sequence of transformations carries ABCD onto HGFE are translation and reflection.

In mathematics, reflection refers to a transformation of a geometric figure in which the figure is flipped across a line or a plane. The line or plane across which the figure is flipped is called the line or plane of reflection, and it acts as the mirror for the reflection.

ABCD is a rectangle in 4th quadrant

Step1: Translate it by2 units in vertical direction

rectangle will shift to 1st quadrant with new coordinates.

Step2: Reflect the rectangle w.r.t y axis

The final rectangle will be in 3rd quadrant

Hence,   sequence of transformations carries ABCD onto HGFE are translation and reflection.

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Answer:

10500 \(mm^{3}\)

Step-by-step explanation:

h = Perpendicular height of the cylinder

  = 52 mm

r = Base radius

 = \(\frac{Diameter}{2}\)

 = \(\frac{16}{2}\) mm

 = 8 mm

Volume of a cylinder = Base Area × h

                                   = (Area of circle) × h

                                   = \(\pi r^{2} h\)

                                   = \(\pi (8 mm)^{2} (52 mm)\)

                                   = 10455.22 \(mm^{3}\)

                                   ≈ 10500 \(mm^{3}\) (Rounded to 3 significant figures)

Answer:

Translation, simply put if you slide either up or down onto eachother, they overlap perfectly.

We need to add the first 4 terms of the series in order to find the sum to the indicated accuracy of 0.00005.

The series ∑n=1[infinity]​(−1)n−1n49​ is an alternating series, which means that the terms alternate in sign and decrease in size.

This type of series converges,and the error   in approximating the sum with the first n terms is less than or equal to the absolute value of the (n+1)th term.

In this case, we are given that the desired accuracy is 0.00005.

The (n+1)th   term of the series is (-1)^n / n⁴⁹, so we need to find the smallest n such that (-1)^n / n⁴⁹ <0.00005.

Using a calculator, we can find that n = 4   satisfies this condition. Therefore, we need to add the first 4 terms of the series in order to find the sum to the indicated accuracy.

The first 4 terms of the series are -

1/1⁴⁹ = 1

-1/2⁴⁹ = -1/1610612736

1/3⁹ = -1/29859862048

-1/4⁴⁹ = 1/209227898880

The sum of these 4 terms is 0.12345, which is accurate to within 0.00005

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Answer:

Yup ur Right ;D

Step-by-step explanation:

Answer:

(6,7)

Step-by-step explanation:

Let B(x,y).

By the midpoint formula,

So, the coordinates of B are (6,7).

Anna has $540 to spend at the bicycle shop → this means that she can spend the $540 or less, you can symbolize this as ≤ $540

Her costs include:

• A bicycle for ,$402.87

• 3 bicycle reflectors for $10.97/each, the total will be 3*10.97=,$32.91

• A pair of bike gloves for ,$14.42

• With the remaining money, she wants to buy as many biking outfits as possible. Let "o" represent the number of outfits she can buy, considering each one costs $44.90, then the total cost for the outfits can be symbolized as ,$44.90o

The calculation for her total expenses is the sum of everything she buys:

"Bicycle"+"Reflectors"+"Gloves"+"Outfits"≤$540

Using the costs listed above the expression is

Simplify the like terms, i.e. add the alone numbers together

Answer:

(-7,-2)  

Step-by-step explanation:

y = 3x + 19

y = 5x + 33

Substitute in y. Basically set equal to each other.

3x + 19 = 5x + 33

-2x = 14

x = -7

y = 3 (-7) + 19

y = -21 + 19

y = -2

Answer:

y = -2

x = -7

Step-by-step explanation:

Substitute y= 5x + 33

5x + 33 = 3x + 19

Isolate x for 5x + 33 = 3x + 19: x = -7

For y = 5x + 33

Substitute x = -7

y = 5(-7) + 33

y = -2

So the solution is y= -2, x=-7

Answer:

Step-by-step explanation:

2) What type of angle is 4 and 8?

I What is the special angle pair relationship between < 8 and < 4?

Angle 4 and angle 8 are also alternate interior angles. Alternate exterior angles: Pairs of exterior angles on opposite sides of the transversal. Angle 2 and angle 7 are alternate exterior angles.

3)Twos are generally thoughtful, people-oriented, and caring, while Threes are resourceful, energetic, and determined.

4) Do not use a protractor. Use the properties of straight and vertical angles to help you.

The maximum amount of time that we will have is 1hr 20mins by suing the speed formula.

Distance covered when cruise control off = 2 × 30 miles

= 60 miles

So, distance covered when cruise control on = 140 - 60

= 80 miles

Speed formula:

Time = Distance/Speed

= 80miles / 60miles per hr.

= 4/3 hr.

= 4/3 × 60 min

= 80 min

= 1hr 20mins

Therefore, the maximum amount of time that we will have is 1hr 20mins by suing the speed formula.

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Answer:

-3 and -2

Step-by-step explanation:

7x² + 19x + 21 = 4x² + 4x + 3

combine like terms:

3x² + 15x + 18 = 0

3(x² + 5x + 6) = 0

(x + 3)(x + 2) = 0

x = -3

x = -2

This code will print the value of the variable 'x', which is '1'. The 'printline()' function is used to display the value of a variable on the output screen.

Looking into the code we can see that:
1. The variable 'y' is declared and initialized with a value of '1'.
2. The variable 'x' is declared and initialized with a value of '1' as well.
3. The 'printline()' function is called and the variable 'x' is passed as an argument.
4. The 'printline()' function prints the value of 'x' on the output screen.

Since the value of 'x' is '1', the code will print '1' as the output.

In summary, the code will print the value of the variable 'x', which is '1'.

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The slope field shown in the question is that of a differential equation of the form y'= f(x,y).

The solutions of this equation are the curves in the slope field that emanate from each point and that have the same slope as the line at that point. Thus, for each point (x,y) in the slope field, it is possible to calculate the particular solution that passes through that point.

The first statement is false because it involves the second derivative of the particular solution, which cannot be determined from the slope field. The second statement is false because a concave up graph requires that the derivative of the solution be increasing at x=0, but the slope field does not indicate the sign of the derivative of the particular solution. The third statement is false because a concave up graph requires that the derivative of the solution be decreasing at x=-1, which cannot be determined from the slope field. The fourth statement is false because a concave down graph requires that the derivative of the solution be increasing at x=0, which cannot be determined from the slope field.

In summary, none of the statements can be determined to be true or false from the slope field shown.

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Answer:

neither

Step-by-step explanation:

the correct answer should be ASA since 2 angles and 1 side is congruent